Add parity scale codec

Cargo.toml

@@ -33,11 +33,14 @@ diesel1 = { default-features = false, optional = true, package = "diesel", versi
 diesel2 = { default-features = false, optional = true, package = "diesel", version = "2.0" }
 ndarray = { default-features = false, optional = true, version = "0.15.6" }
 num-traits = { default-features = false, features = ["i128"], version = "0.2" }
+parity-scale-codec = { optional = true, version = "3.1.5", features = ["max-encoded-len"], default-features = false}
+parity-scale-codec-derive = { optional = true, version = "3.1.3",default-features = false}
 postgres = { default-features = false, optional = true, version = "0.19" }
 proptest = { default-features = false, optional = true, features = ["std"], version = "1.0" }
 rand = { default-features = false, optional = true, version = "0.8" }
 rkyv = { default-features = false, features = ["size_32", "std"], optional = true, version = "0.7" }
 rocket = { default-features = false, optional = true, version = "0.5.0-rc.1" }
+scale-info = {optional=true, version = "2.1.2", features = ["derive"], default-features = false}
 serde = { default-features = false, optional = true, version = "1.0" }
 serde_json = { default-features = false, optional = true, version = "1.0" }
 tokio-postgres = { default-features = false, optional = true, version = "0.7" }
@@ -78,6 +81,7 @@ rkyv = ["dep:rkyv"]
 rkyv-safe = ["dep:bytecheck", "rkyv/validation"]
 rocket-traits = ["dep:rocket"]
 rust-fuzz = ["dep:arbitrary"]
+scale-codec =  ["parity-scale-codec-derive","parity-scale-codec","scale-info"]
 serde = ["dep:serde"]
 serde-arbitrary-precision = ["serde-with-arbitrary-precision"]
 serde-bincode = ["serde-str"] # Backwards compatability
@@ -86,7 +90,7 @@ serde-str = ["serde-with-str"]
 serde-with-arbitrary-precision = ["serde", "serde_json/arbitrary_precision", "serde_json/std"]
 serde-with-float = ["serde"]
 serde-with-str = ["serde"]
-std = ["arrayvec/std", "borsh?/std", "bytecheck?/std", "byteorder?/std", "bytes?/std", "rand?/std", "rkyv?/std", "serde?/std", "serde_json?/std"]
+std = ["arrayvec/std", "borsh?/std", "bytecheck?/std", "byteorder?/std", "bytes?/std", "rand?/std", "rkyv?/std", "serde?/std", "serde_json?/std", "parity-scale-codec?/std","scale-info?/std"]
 tokio-pg = ["db-tokio-postgres"] # Backwards compatability
 
 [workspace]

src/decimal.rs

@@ -27,6 +27,10 @@ use num_traits::float::FloatCore;
 use num_traits::{FromPrimitive, Num, One, Signed, ToPrimitive, Zero};
 #[cfg(feature = "rkyv")]
 use rkyv::{Archive, Deserialize, Serialize};
+#[cfg(feature = "scale-codec")]
+use parity_scale_codec_derive::{Decode,Encode, MaxEncodedLen};
+#[cfg(feature = "scale-codec")]
+use scale_info::TypeInfo;
 
 /// The smallest value that can be represented by this decimal type.
 const MIN: Decimal = Decimal {
@@ -120,6 +124,11 @@ pub struct UnpackedDecimal {
     archive(compare(PartialEq)),
     archive_attr(derive(Clone, Copy, Debug))
 )]
+#[cfg_attr(feature = "rkyv-safe", archive_attr(derive(CheckBytes)))]
+#[cfg_attr(
+feature = "scale-codec",
+derive(Decode, Encode, TypeInfo, MaxEncodedLen),
+)]
 #[cfg_attr(feature = "rkyv-safe", archive_attr(derive(bytecheck::CheckBytes)))]
 pub struct Decimal {
     // Bits 0-15: unused
@@ -548,7 +557,7 @@ impl Decimal {
     }
 
     #[must_use]
-    pub(crate) const fn from_parts_raw(lo: u32, mid: u32, hi: u32, flags: u32) -> Decimal {
+    pub const fn from_parts_raw(lo: u32, mid: u32, hi: u32, flags: u32) -> Decimal {
         if lo == 0 && mid == 0 && hi == 0 {
             Decimal {
                 lo,